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 Calling fft.corr() from OriginC		  New Topic  Reply to Topic
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RajPatel

UK
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Posted - 03/19/2007 :  10:36:40 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version (Select Help-->About Origin): 7.5pro
Operating System: XP pro

Hi,

I have two columns of data that I'm generating in OriginC which are also stored as vectors. I would like to find the correlation and lag from this data using the LabTalk function fft.corr().

In origin c I have tried using:

LT_execute("fft.corr(col(ParaPhotons),col(SysResln));col(correlation)=fft.corr.corrData$;");

but it doesn't do anything... IU don't think it's even executing the correlation function... If I enter

type -b "my msg";

in between the statements that seems to work... I just can't get it to correlate the data.


Thanks in advance

Mike Buess

USA
3037 Posts
Posted - 03/19/2007 :  1:05:54 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
1. fft.corr() automatically fills the dataset named by fft.corr.corrData$.
2. Column names are not sufficient as arguments or values... full dataset names are required.

If the columns are in the active worksheet then this will work...

LT_execute("fft.corr.corrData$=%H_correlation; fft.corr(%H_ParaPhotons,%H_SysResln)");

Mike Buess
Origin WebRing Member
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